diff --git a/pyproject.toml b/pyproject.toml
index fd0dfedc..0b23eb89 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "qcelemental"
-version = "0.27.1"
+version = "0.28.0"
 description = "Core data structures for Quantum Chemistry."
 authors = ["The QCArchive Development Team <qcarchive@molssi.org>"]
 license = "BSD-3-Clause"